美国核电厂安全辅助目标研究

Study on Safety Subsidiary Objective of Nuclear Power Plant in USA

摘要: 本文回顾了美国定量安全目标和辅助目标的发展历程，参考NUREG-1150中概率安全分析（PSA）方法，给出了堆芯损坏频率和早期大量放射性释放频率的数学表达式。重点论证了辅助目标和定量安全目标的关系，比较了本文论证方法与NUREG-1860论证方法的不同。研究了美国对新建电站安全目标的要求和PSA技术的发展方向，探讨了其对我国核电厂安全目标和PSA技术发展的借鉴。

Abstract: This paper reviewed the development of the quantitative safety objective and subsidiary objective in USA. The expressions of CDF and LERF were obtained according to NUREG-1150. The relationship between the subsidiary objective and the quantitative safety objective was derived. The method was compared with that used in NUREG-1860. The requirements of safety objective for the future nuclear power plant and the development of probabilistic safety analysis （PSA） technology in USA were studied and can be used as reference in China.